Toshiba 18 - 1250 A - Manual (Page 84)

TE Series Digital Solid State Soft Starters 18 – 1250A
77
Display
Pre ss
Ke y...
Shows...
M eans...
Starting at
Function #30
De fault Se tting
of Function #30
Set F030 = 2
Permissiv e
Run Time r
F030
0000
0002
Re turn to
Function # Display
Figure App 4.2:
Program m ing Perm issive Run Tim er Functions
Example: Process Timer for Compressor
F031
READ
ENTER
Change Se tting
to 600 minutes 0600
READ
ENTER
End Value Accepte d
(flashes once )
Change to
F031
F031
Default Se tting
of Function #31
0000 READ
ENTER
READ
ENTER
End Value Accepte d
(flashes once )
x 2
x 2
x 6
Cycle Control Power to Accept Change s
Example: Figure App 4.2
Permissive Run Timer
An air compressor controlled by a pressure switch feeds a large
air distribution system that has small normally insignificant leaks.
If left on over night when the system is not in use, leaks drop the
air pressure and the compressor cycles on and off even though
the facility is unoccupied, wasting energy.
Set F030 to [0002] for Permissive Run Timer.
This will ensure that if nobody remembers to shut the compressor
off, it will not run when the facility is shut down.
Set F031 to [0600] minutes (10 hours)
This is the longest Run Time after which the starter will
automatically shut down. This ensures that it will not restart after
the time expires and until a new Start Event occurs.
(Not Shown)
Ensure F032 is set to [0001] for Every Day, and F033 is set to
correspond to work start time (or 5 minutes prior)
This will allow the Run command provided by the pressure switch
to engage the starter any time it is required after the shift begins.
With this setting, the compressor will start whenever the pressure
switch calls for it after the Start Event set by the Time Clock
Controller, but if forgotten it will shut itself off after 10 hours. If
power is turned off or lost during those 10 hours, the timer is not
cleared or reset, so even if it is turn back on 1 minute before the
timer expires, it still shuts off at the end of that 10 hour period.
NOTE:
If the Process Control Timer (F030) is set for Minimum Batch Timer (value of 1), and the next
Start Event Cycle passes without a Start command, the previous event will be ignored in favor of
the new one.
If a
Process Control Timer setting from F031 is so long that it overlaps a Start Event Cycle
setting in F032-F039, the original timer value becomes invalid. The new Start Event Cycle reloads
the value of F031 and begins counting down again from the beginning.
F031 = Process Timer Value
Factory Setting = 1
Range = 1 – 9999 minutes
This function loads a value into the Process Control Timer
above. When initialized, the value counts down towards 0.
F030 sets the operating mode and reset functions for this timer:
The value of this timer can be read directly in the main Status
Screen (see section 5.3.1). When the Process Control Timer
has been enabled in F030, the Status Screen display for the
value will flash once per second while timing. When completed,
it will stop flashing and read [0000].